Listing not showing with a shortcode

Hello,

I wanted to use this shortcode for show up listing with title filter

[azindex filter=”title”]
[azindexoutput]

suppose a use click on [A] index from [A][B][C]…..
the post will showp which have title first letter ‘A’

But nothing showing up

Could you please help me about this?

https://www.ads-software.com/plugins/bemo-a-z-index/